Thanks for the reply. But if you start from scratch, most of the future needs are not clear yet. This makes an initial choice extremely difficult.
In my case, I came to a ready situation where a well working tool already is in place. But in other communities where I am active, I see a lot of limitations with their current platform and I would love to see those changed.
I think that because of those limitations, the activity is very low. Too low for the amount of members.
This is getting slightly offtopic, but besides the 1-9-90 rule, how can you prove that the community (platform) needs a different approach? I think I will need to convince the project leaders that action is necessary.